208204104489 has 8 divisors (see below), whose sum is σ = 277608876480. Its totient is φ = 138801034416.

The previous prime is 208204104469. The next prime is 208204104509. The reversal of 208204104489 is 984401402802.

208204104489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (208204104469) and next prime (208204104509).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 208204104489 - 2¹³ = 208204096297 is a prime.

It is a super-2 number, since 2×208204104489² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208204104489.

It is not an unprimeable number, because it can be changed into a prime (208204104469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105694 + ... + 653895.

It is an arithmetic number, because the mean of its divisors is an integer number (34701109560).

Almost surely, 2^208204104489 is an apocalyptic number.

It is an amenable number.

208204104489 is a deficient number, since it is larger than the sum of its proper divisors (69404771991).

208204104489 is an equidigital number, since it uses as much as digits as its factorization.

208204104489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850959.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 208204104489 in words is "two hundred eight billion, two hundred four million, one hundred four thousand, four hundred eighty-nine".